Used for drilling limiting and prevents drilling too deep. Various sizes: you will receive a drill depth stop set, which includes 8 drill stop rings in different sizes and 1 Allen key. The diameter of the depth stop for drill bits are 3 mm, 4 mm, 5 mm, 6 mm, 8 mm, 10 mm, 12 mm, 16 mm. Different sizes are available for different drill types to meet the requirements of daily work High-quality carbon steel: the depth stop for drill is made of high... Product attributes: Material: stainless steel., Colour: silver., Package size: 6., 5 x 6., 5 x 2 cm/2., 5 x 2., 5 x 0., 7 inches., Package weight: 60 g / 2., 1 oz. Manufacture Bespoke SDS Max Depth Stop Drill Bit Drill Stop Collar Rings Depth Stop, Drilling Depth Stop, Drill, Depth Limiter, Depth Et / 8 Pcs Drill Bit Collar Set Product sizes: 3mm, 4mm, 5mm, 6mm, 8mm, 10mm, 12mm, 16mm. drill depth stop question | UK Workshop Material: drill depth stop is made of 304 stainless steel, robust and durable. Package includes: 9 x depth stop rings - silver.