Description: hexagonal handle, general specification edge 6.35mm 1/4 circle 1/2 "12.5mm 3/8" 10mm 1/4 "6.3mmConnector material: chrome vanadium steel hexagonal handle right angle connector, suitable for screwdriver handle or electric screwdriver tool (hexagonal hole or three jaw chuck) transmission sleeve. The original hexagonal size used after installation can be converted to square head size. Therefore, the number of sleeves used for installation: 5 /8Specification (5 pieces / set):1 / 4 * 1 / 4 * 50mm long ----- 1 / 4 inch rod can be converted to 6.35mm square head 3 / 8 * 1 / 4 * 50mm long ----- 1 / 4 inch rod can be converted to 9.53mm square head 1 / 2 * 1 / 4 * 50mm long ----- 1 / 4 inch rod can be converted to 12.7mm square head 1 / 4 * 1 / 4 * 25MM long ----- 1 / 4 inch rod can be converted to 6.35mm square head 1 / 4 * 30MM long ----- 1 / 4 inch handle can be converted to 6.35mm square headSpecification (8 pieces / set):1 / 4 * 1 / 4 * 50mm long ----- 1 / 4 inch handle can be converted to 6.35mm square head 3 / 8 * 1 / 4 * 50mm long ----- 1 / 4 inch handle can be converted to 9.53mm square head 1 / 2 * 1 / 4 * 50mm long ----- 1 / 4 inch handle can be converted to 12.7mm square head 1 / 4 * 1 / 4 * 65mm long ----- 1 / 4 inch rod can be converted to 6.35mm square head 3 / 8 * 1 / 4 * 65mm long ----- 1 / 4 inch rod can be converted to 9.53mm square head 1 / 2 * 4 * 73mm long ----- 1 / 4 inch the rod can be converted to 12.7mm square head 1/4*1/4*25mm length ----- 1/4 inch rod can be converted to 6.3 5mm square head 1/4*1/4*30mm length ----- 1/4 inch rod can be converted to 6.35mm square headNote: due to lighting effect, display brightness, contrast setting and other reasons, the hue of the picture may be slightly different from the actual project. Due to manual measurement, please allow a difference of 1-2mm, thank you.Package includes: 1 drill nut drive power extension rod kit, no retail box.