The Hillman Group 370197 Mini Lag Shield, 1/2-Inch Short, 10-Pack Product Description Features Short (2"). Requires 3/4" bit. Takes 1/2" screw. Use in mortar concrete. Zinc. Box of 8. Box of 8 Specifications Dimension: 2.6" H x 3.3" W x 4.3" L Weight: 1 lbs . From the Manufacturer Provides secure anchorage of lag screws in concrete and the mortar joints of block and brick. Short lengths may be used to shorten drilling time. Four way expansion insures a tight grip and prevents over expansion. No lubrication is required. Features Features Short (2") Requires 3/4" Bit Takes 1/2" Screw From The Brand Name: The Hillman Group USA SHIPPING estimates delivery times and we work to get your item to you as quickly as possible and within those times, but please know it may take slightly longer than the estimate.