Purpose: This adapter set is designed to provide extension locks to your existing tool. Provides additional length to reach a multitude of hard-to-reach spaces. The spring ball lock ensures a tight fit in the driver head to prevent slipping during use. Specifically machined to securely fit a handheld screwdriver, drill driver or impact wrench. PACKAGE CONTAINS: 3Pcs: 1/4", 3/8", 1/2" each with a wrench 1/4" hex/screwdriver bits for all quick change drill chuck systems.Turns any electric drill into a conductive power nut. Heavy-duty spring loaded ball bearing holds sockets securely in place. The sockets snap into place firmly and do not slip.Colorful: Easy to choose: Different color-coded rings, clear help quickly choose the right one. Our products belong to the latest updates, the quality is super good. Material: chrome vanadium QUALITY: Made from hardened chrome-vanadium (Cr-V) steel to ensure long life Construction to be compatible with the most powerful impact guns.Usage: Sits comfortably and securely in your drill chuck or handheld driver. Consists of your most common bit sizes 1/4", 3/8", and 1/3" change shank sizes Provides versatility and convenience no matter which tool you choose to 'use.Great for DYI, auto repairs, household maintenance, and most general repairs.A good addition to any toolbox set. Specification: Weight: Approx 100g All Sockets Standard 1/4" Hex Shank Key Features: 1. Fits sockets to drills and drivers 2. Expand ball for secure socket retention so sockets snap into place firmly and won't slip-resistant 3. 1/4-inch hex shank prevents stripping during high-speed drilling 4. Heavy-duty heat-treated chrome-vanadium steel for normal and impact use 5. Sandblasted finish 6. Converts all drills power in quick plug drivers 7. Use with a hand screwdriver handle or battery/power tool 8. Color coded for easy recognition Size: 1/4*1/4*65mm length - 1/4" shank can be converted to 6.35mm square head 3/8*1/4*65mm length - 1/4" shank can be converted to 9mm square head 1/2*1/4*72mm length - 1/4" shank can be converted to 13mm square head Package included: 1 x (1/4" hex socket 1/4" socket) 1 x (1/4" hex socket 3/8" socket) 1 x (1/4" hex socket) socket 1/2") LRFR is committed to providing each customer with the highest possible quality of customer service.