Profile: Critical Handpiece Repair repairs all handpieces regardless of the make and model. We also offer used handpieces and various dental accessories. Every used handpiece has undergone a complete and thorough examination. All handpieces are disassembled and all necessary components are replaced. Every used handpiece carries at least a 6 month warranty. The TPC lubrication system H6000 has the capability of lubing and maintaining high speed handpieces. Meisinger diamond instrument consists of a shank and a hardened, stainless profile body coated by means of the most modern electro technology, with selected diamond grains. This guarantees an extremely homogenous, safe and lasting diamond coating of the instrument.