http://www.cutoutiltools.com/cutting-tools/carbide-boring-bars/ Small diameter carbide boring bars is mostly for S type internal turning tools . It can be made of alloy steel and carbide shank . We are professional manufacturer for producing carbide boring bar . Without coolant hole or with coolant hole make you have more choices . Features of small diameter carbide boring bars 1. Type: Internal turning tool holder,boring bar. 2. Workpiece material: Steel, stainless steel, cast iron, aluminium, copper, low alloy,plastic. 3. Cutting accuracy: : Roughing,finishing,simi-finish. 4. Inserts available: CCGT03/CCGT04/CCGT06 5: Machine available: CNC lathe,Turning machine 8. Holder accessory: Insert screw,flag type wrench. Product Parameter of small diameter carbide boring bars: Carbide Shank with inner coolant hole E08K-STUPRO981259110M2.5-T8TC-0902 E10M-STUPRO91015011112 E12Q-STUPR111218013114M3.0-T8TP-1103 E14Q-STUPR111418015116 E16R-STUPR111620017118 E18S-STUPR111825019120 E20S-STUPR112025021122 E25T-STUPR112530027229 Cutoutil Hardware Tools Co.,LtD is a professional company specialized in cutting tools ,Diamond tools,Machine Accessories and measuring tools . The scope of main products included turning tools milling tools, Carbide End Mills,Carbide Ball End Mills and carbide burrs ,Carbide Drills & milling cutter ,carbide inserts and ER collets ,chucks ,small diameter carbide boring bars. Shipping : -The items will be shipped out within 3-7days after received your payment. -We usually ship items via DHL, TNT, Fedex, UPS, Airmail, ePacket, EMS, china Post. Air Mail. Q1: Are you a factory? A1:Yes, we are a professional manufacturer Q2: How about OEM? A2:YES We can do OEM as your request . Q3: Can l mix the items to place order together? A3: Yes, we can collect other goods for you in China . Q4 :What is Delivery time for production? A4: Normally 5-7days for delivery if it's in stock . Q5: What is your payment method? A5:T/T 100% will be paid in one lump sum before delivery.low price Carbide Boring Bars website:http://www.cutoutiltools.com/cutting-tools/carbide-boring-bars/