SybronEndo handpieces have long been clinician favorites and are compatible with all manufacturer's e-type couplings and are ideal for TF, K3XF, K3 and Quantec. Axxess Spring-Head Handpiece Axxess Spring-Head HandpieceThe Axxess handpieces provide additional clearance (when used with Axxess files such as K3) to ease work in tight posterior regions. The Axxess handpiece will accept standard rotary files as well. The 8:1 and 18:1 handpieces are perfect for rotary NiTi use.