4 in 1 Universal Fits Electric Drill Cordless Drill Chuck 1/4" 3/8" 1/2" 5/8"Features:The 1.4-in-1 drill chuck is the only tool you need to lock and unlock your drill bit. It allows you to hold drill bits firmly in place for tough jobs. It helps in securing drills in hammer drills and is also versatile for many other types of drills. Small key allows for easy storage and use.2. Made of steel and coated with durable paint, this drill chuck will be able to survive any job you can throw at it. Each side is finely manufactured for an exact fit with the right drill size.3. Ideal for the handyman who needs to hold the drill securely in the drill. Great for home needs, do-it-yourself projects and large construction projects. Great for use with hammer drills when a tight fit is required. It also allows for quick replacement of drill heads. Specification: Material: Steel Machine Application: Drilling Sizes: 13mm, 14mm, 16mm, 17.3mm Color: Black, Silver Size: app.7.5x7.5cm Weight: 42g Packing List: 1 * Drill Chuck Drill Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement error is +/- 1-3cm.