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Otherwise, standard shipping charges apply. Check out our delivery Terms & Conditions for more details.

【Size】- 12mm/ 1/2 inches bore, Hex wrench is included to help adjust and install the stop rings

【Durable Material】-Strong and durable steel with black-oxide finished for better corrosion-resistance. Set screw type will stay sturdy when tightened and is specially designed not to break the bits

【Quality】- The Durable Alloy Steel Setscrew Type Collar will stay sturdy when tightened and is specially designed not to damage the bits

【Adjustable】- Drill stop bit can be quickly and easily adjusted at any point on drill bit flutes, helps to drill holes to exact depths, prevents under and over drilling

【Application】- Bit Limit Rings are used as a Shaft Collar on machinery and can be used on twist drill bits or brad point drills or any type of bit to prevent excessive drill bit penetration and for any job that uses a bit and needs precision