Description---2 in 1 Drill Chuck Ratchet Spanner: Ordinary drill chuck wrenches are laborious and time-consuming to replace the drill bit. Then our 2 in 1 Drill Chuck Ratchet Spanner can help you solve this problem---Size: Two sizes help you work perfectly. Small head diameter: 12.7mm, big head diameter: 17.5mm. The double-head design is suitable for most chucks, and the ratchet function allows you to work faster. ---Function: Use to tighten or loosen the chuck. Perfect for most electric drills and power tools. The ratchet function makes changing the drill bit more efficient. ---Dual-purpose Design: With a positive and negative ratchet switch, it can rotate forward and reverse, and quickly loosen and tighten the drill chuck, which is simple and convenient. ---Material: Made of high quality steel, wear resistant and has a long service life. The handle is non-slip and comfortable to hold.Feature:Made of metal, it has high durability.Used to control the tightness of electric drill clamping tools.It can be used in hammering or drilling mode, very durable and comfortable to hold.Suitable for most electric drills and electric tools, easier to operate.Specification:Material: 45 steel, plastic, rubberKey diameter: small head 12.7mm/0.5'', big head 17.5mm/0.68'' Size: 150 * 45 * 20mm/5.9*1.77*0.78''Included:1/2/3/5 X Drill Chuck Key Wrench