General description The FAMAG Depth Adjusting Collar Set includes seven precision collars designed for easy depth adjustment on drills. This set is perfect for woodworkers and DIY enthusiasts looking to achieve accurate drilling depths with various drill bit sizes. Technical specifications Collar sizes: 3mm, 4mm, 5mm, 6mm, 8mm, 10mm, 12mm Material: Durable plastic Packaging: Comes in a convenient plastic tube for easy storage