Comprehensive depth stop collar set for precise drilling Includes five depth stop collars in sizes 3 mm, 4 mm, 5 mm, 6 mm, and 8 mm, plus a wrench for quick adjustments. Precise depth control provides consistent results on woodworking projects. Carbon steel construction for durable, longlasting performance and wear resistance. Easy to use with a setscrew design that locks the collar securely anywhere along the drill bit without causing damage, suitable for both beginners and professionals. Key benefits Accurate, repeatable drilling depth across multiple pieces. Versatile sizes cover common woodworking tasks from small to larger stop depths. Durable material stands up to regular use without loss of functionality. Simple adjustment process reduces the risk of bit damage and user error. Usage scenarios Set fixed depths for dowels, pocket holes, or hardware installation to ensure uniform depth across all components. Create consistent drilling depths when assembling cabinetry, shelving, or picture frames for a precise fit. Drill safely in soft woods or delicate materials by limiting penetration to the desired depth, avoiding throughholes. Specifications at a glance Five collars: 3 mm, 4 mm, 5 mm, 6 mm, 8 mm Includes a wrench Material: carbon steel Setscrew locking mechanism for secure, adjustable placement on the drill bit