Product Name: High Quality Precision Boring Combi Sets Model NO.: 220-12xx Condition: New Certification: ISO 9001 Automatic Grade: Semiautomatic Precision: High Precision Controlling Mode: Artificial Tool Type: Boring Coordinate Boring Machine Type: Horizontal Type Structure: Horizontal Boring Machine Boring Head: F1 & F2 Shank of The Boring Bar: Inch & Metric Package: Plastic Case Trademark: neutral or OEM Transport Package: in Plastic Box Inside and Cartons Outside Origin: Shandong, China Product Description Supply good quality of Boring Combi Sets including the Boring Head & Boring Bars packed in good quality boxes.Features:Precision Boring Heads-F1&F2(1)Boring Head Diameter: 2'', 3'' and 4''(2)Borig Bar Size: 1/2'', 3/4 and 1''.(3)All of the shank is suitable for F1(4)R8, MT2, MT3 and MT4 are suitable for F2(5)Maximum rigidity is assured even when boring bar holder is used in an offset position(6)Hardened and ground adjusting screw along with outside base design guaratees long life and trouble free use.Popular Sizes:Metric SetBoring HeadSetSizeModel No.2'',R8 Shank220-16002'', MT3 Shank220-16012'', MT4 Shank220-16023''. R8 Shank220-18003'', MT3 Shank220-18013'', MT4 Shank220-1802Inch SetBoring HeadSetSizeModel No.2'',R8 Shank220-16002'', MT3 Shank220-16012'', MT4 Shank220-16023''. R8 Shank220-18003'', MT3 Shank220-18013'', MT4 Shank220-1802Precision Boring Head-F1 TypeBoringHead Dia.BoringBar Hole SizeMax. OffsetGrad.1-1/2-18Model No.7/8-20Model No.21/25/80.0005 inch220-1200220-121033/410.0005 inch220-1300220-1310411-5/80.0005 inch220-1400220-14105012160.01mm220-1050220-10607518250.01mm220-1075220-108510025410.01mm220-1100220-1110Precision Boring Head-F2 TypeBoring Head Dia.Boring Bar Hole SizeMax.OffsetGrad.TypeThreadModel No.2-1/81/25/160.001 inchF21-5/8inch -16220-1208541280.01mmF21-5/8inch -16220-1054Precision Boring Heads ShankMorse Tper Shak ThreadDraw Bar End Model No.Tang End Model No.1 7/8-20220-1511220-15121 1-1/2-18220-1513220-15142 3/4-20220-1519220-15202 7/8-20220-1521220-15222 1-1/2-18220-1523220-15243 7/8-20220-1531220-15323 1-1/2-18220-1533220-15344 7/8-20220-1541220-15424 1-1/2-18220-1543220-15445 7/8-20220-1551220-15525 1-1/2-18220-1553220-1554Shank Type7/8-20 Thread Model No.1-1/2-18 Thread Model No.R8220-1560220-15611/2 inch Dia. Straight Shank220-1563220-15645/8 inch Dia. Straight Shank220-1566220-15673/4 inch Dia. Straight Shank220-1569220-15707/8 inch Dia. Straight Shank220-1572220-15731 inch Dia. Straight Shank220-1575220-15761-1/4 inch Dia. Straight Shank220-1578220-15791-1/2 inch Dia. Straight Shank220-1581220-15822 inch Dia. Straight Shank220-1584220-158530 taper220-1590220-159140taper220-1593220-159450taper220-1596220-1597