LT laydown triangle threading Insert is the system of choice for fine-pitch threads, high-helix/multi-start threads and single-point threading in small-diameter bores. With a wide selection of CB-style chip control inserts, user will receive superior chip management for excellent surface finishes and minimal operator intervention. The low-profile design enables unrestricted chip flow - Ideal for ID threads, variable shim angles enable proper cutting geometry for high-helix angle, reverse helix angle threading, maximizing tool life and improving thread quality.