Busch Stone Setting No.413 Set Of 11 3.50mm - 8mm

Produces a precise power cut Ideal for cutting seats into claw settings or bezels For use with a pendant drill, hobby drill or micromotor Made from hardened steel Established in 1905, Busch are the leading manufacturers of precision cut rotary accessories and pride themselves on maintaining high quality trend led developments. This set of 10 high quality stone setting burrs have been produced from a single piece of hardened steel and are characterised by a stable design which provides a precise power cut and optimum concentricity, ideal for preparing settings. This collection consist of 11 steel burrs measuring; 3.50mm 3.75mm 4.00mm 4.25mm 4.50mm 4.75mm 5.00mm 5.50mm 6.00mm 7.00mm 8.00mm This measurement is taken from their widest (flat edge), it then tapers at a perfect 90 degree angle to a sharp point to imitate the shape of a round brilliant cut gem stone. They are designed to be used in conjunction with a pendant drill, hobby drill, micromotor or even a pin vice such as 999 AKK or 999 332 to cut or grind away, shape or give pattern to a surface. Suitable to be used on metal, wax and plastics. Each burr`s construction consists of a number of teeth/blades (in a spherical shape) mounted onto a 2.34mm shank. The shank fits into the collet/chuck of the drill, and when turned these teeth cut into and remove the surface being worked upon. Quantity of material removed depends on pressure applied, use of `Burr Life lubricant` (998 021) helps prolong the burrs cutting ability. Supplied in a handy sliding box.