Prime-Line D 1723 Roller Assembly, 1-1/4'' Dia. Roller, Steel, 1-Roller, 4-PACK Stamped steel housing with ball bearing roller Adjustable steel housing assembly Plain back housing with 1/4-20 threaded mounting hole on back 1-1/4 in. diameter concave steel roller Used by Air Control, Howmet, Krestmark and a variety of other sliding patio door manufacturers Specifications: Suitable for: Sliding Patio Glass Doors Used by many patio door manufacturers. Steel ball bearing roller in adjustable 2-5/8 in L x 1-3/8 in H x 3/4 in D steel housing with 10-32 machine thread hole on top center and 1/4-20 side threads for mounting. Product Type Roller Assembly Each Weight 0.300 LB Packaging Type Carded Hardware Included Yes Number in Package 1 pk Length 1.05 Material Steel Diameter 1-1/4" Height 6.40 Width 3.75 ECCN EAR99 Country Origin Code US Dimensions 2-5/8 in L x 3/4 in W x 1-3/8 in H Application For Residential Applications Roller Diameter 1-1/4" Bearing Type Ball Roller Edge Type Concave Number of rollers 1 Mounting Type Plain Back Alternative UPC 078874134763, 081304009326