for Dewalt Drill Replacement Reverse Thread Chuck Screw 605256-01 GENUINE Type: Hex Head Screw. Color: as the picture shows. Application: Cordless Drill. 1" Overall Length. Part Number 605256-01. T-20 Torx Head with 1/4-28 Lend Hand Threads. Packing quantity Includes One (1) Chuck Screw as the picture shows. Every Product from HASMX will enjoy 30 days Money-back and 18-Months worry-free warranty. If you're not sure whether it fits your model, please email us-includes your Models and serial number. Note - This is an aftermarket replacement Parts. Any brand name is used solely for the purpose of demonstrating compatibility.