Fast Shipping On All Items 30 Days Money Guarantee Customer Support Excellent Service 100% Satisfaction Satisfaction Guaranteed We ship to US territories and worldwide. Please contact us if you have any special shipping instructions. 21 Pcs Hss Interchangeable Pilot Counterbore Set, 3620-0121 Specification Item model number 3620-0121 Style Interchangeable pilot Material High Speed Steel (HSS) Is Discontinued By Manufacturer No Brand Accusize Industrial Tools Shank Type Straight Cutting Diameter 0.5 Inches Manufacturer Accusize Co., Ltd. Finish Type Uncoated Package Dimensions 10 x 7.56 x 2.36 inches; 2.2 Pounds Size Inch 7.56 inches x 10.0 inches x 2.36 inches. Weight: 2.2 lb Supplied in a fitted case. 14 pilots with a 5/32" shank including 0.187, 0.204, 0.213, 0.229, 1/4, 17/64, 9/32, 5/16, 21/64, 11/32, 3/8, 25/64, 13/32 and 7/16. 6 counterbores including 5/16, 3/8, 7/16, 1/2, 9/16 and 5/8 1 Holder with a 3/8" shank. Versatile Pilot Range: Includes 14 pilot sizes from 0.187" to 7/16", catering to diverse machining requirements. Comprehensive Counterbores: Features 6 counterbores from 5/16" to 5/8", designed for precision and compatibility. Efficient Design: Comes with a 3/8" straight shank holder, enhancing the set's usability across various applications. Durability Longevity: Crafted from high-speed steel for durability, ensuring prolonged tool life and consistent performance. Organized Protected: The aluminum fitted case provides secure storage and organization, protecting tools from damage. Product description 14 pilots with a 5/32" shank including 0.187, 0.204, 0.213, 0.229, 1/4, 17/64, 9/32, 5/16, 21/64, 11/32, 3/8, 25/64, 13/32 and 7/16. 6 counterbores including 5/16, 3/8, 7/16, 1/2, 9/16, and 5/8. 1 Holder with a 3/8" shank. Tips of Using Interchangeable Counterbores Tips of Configuring Interchangeable Counterbores Step 1 Loosen screws of the holder before configuring the holder, counterbores, and pilots Step 2 Make sure the flat of the pilot shank faces the screws when inserting the pilot and the counterbore into the holder. Step 3 Make sure the flat of the counterbore shank faces the screws when inserting the pilot and the counterbore into the holder. Tips of Configuring Interchangeable Counterbores A Step 4 Ensure there is no gap between the counterbore and the holder after inserting the counterbore with the pilot into the holder Step 5 Tighten the screw to fix the counterbore with the holder. Step 6 Tighten the screw to fix the pilot with the holder. SHIPPING . We ship to US territories and worldwide. Please contact us if you have any special shipping instructions. Return Policy ? We guarantee against any defective or misrepresented products. The original shipping label must be sent back to us to validate the return. A full refund can only be issued during the first 30 days upon receipt of the product. ? Returns will be voided if the product is mishandled or physical damaged by customer. ? Buyer will be responsible for all kind of return shipping/shipment to the seller for resolving the problem. ? Returns made for all non-defective, undamaged products are subject to a 15% restocking fee. Shipping and handling fees are absolutely non-refundable. If an item is returned to us due to an address issue, we do charge a reshipping fee to reship. If you would like a refund, there will be a 15% restocking fee applied. ? All returned products need to be assigned an RMA # (Return Merchandise Authorization #) prior to return. Please contact us through's messaging system to obtain an RMA# for the return. Any returned product without an RMA # on package will not be accepted or processed. ? Please contact us before returning. Feedback ? We appreciate your feedback and our system will automatically leave feedback for you after bid ends. ? Please contact us through message center if you have any problems, we will always try our best for 100% customer satisfaction. Payment Options Shop With Confidence