AccusizeTools - 7 Pieces/Set 3/4" Indexable Carbide Turning Tool Set in Fitted Box, Lathe Tool #2387-2006 Shank Size (H x W): 3/4&#034; x 3/4&#034;. Overall Length:  4-1/2&#034; Black oxided smooth finish on each turning tool holder style and shank size. Each tool holder comes with a C6 TiN coated carbide insert with positive rake cutting angle and built-in chip breaker great for general purpose cutting action. Including  <ul class="a-unordered-list a-vertical"> 7 pcs indexable turning tool holder; 7 pcs TiN coated C6 carbide inserts; 7 pcs hex screws; 3 pcs hexagon keys; 1 fitted Aluminum case. SWGCR12-3B: M4 x 10 SER0750B16: M5 x 0.5 and M3.5 x 11 MGEHR12-3B: M5 x 12 SDNCN12-3B: M4 x 12 SDJCR12-3B: M4 x 12 SCLCR12-3B: M4 x 12 SCLCL12-3B: M4 x 12 SKU: MGEHR12-3B ASIN:   B077TYY9JM Does not come with any inserts. SKU: 2415-5030 ASIN:  B07F8CDJQP For shallow precision grooving and profile/copy turning O-ring. snap-ring, relief grooving and high production Opening of wide grooves by plunging and side turning Precision clamping and insert indexing accuracy Stable under side cutting forces when profile turning Maximum stability due to short overhang Shank Size (A x H): 3/4&#034; x 3/4&#034;