Carmex Thread Mills Solid Carbide - With Through Coolant - BSPT - RC1/8 x 28 - MT7Meet Carmex MTB through coolant thread mills: precision solid carbide tools engineered for BSPT threading with an MT7 shank. Designed for RC1 8 x 28 threads, they deliver consistent performance in compact, demanding machining environments. Throughcoolant bore: coolant is delivered directly to the cutting edge, helping flush chips from the bore and control heat for cleaner, more accurate threads. Solid carbide construction: rigid, wearresistant