9Pcs 3-16Mm Dia Woodworking Drill Bit Depth Stop Collars Ring Positioner Locator

Feature： * brand new and high quality *High carbon steel features high hardness strong strength and long durability *Designed to grip the entire diameter of your drill bit without screw ever touching the shaft *Used to accurately control the depth of the hole you are drilling hold securely in place where you put them *Help to limit the depth of drilling hole as you want *Equipped with a hex wrench for convenient use *Easy to use just insert the stop collar on the drill bit to to the desired depth and tighten by wrench *Sizes: 3mm 4mm 5mm 6mm 8mm 10mm 12mm 16mm *Wrench Colour: Black *Material: Carbon steel *Quantity: 8 stop collars Package list： 8 x Drill Bit Depth Stop Collar 1 x Hex Wrench