Advantage Industrial Quality Drill Bits We Manufacture Quality before Products Professional Quality Since 1983 Advanced Auto Brazing Machine Detail 鈼?With 30 Years Production Experience and complete quality control system, Dongya drill bits are reliable and durable with high quality 40Cr steel, YG8C carbide tip, auto-brazing and stable heat-treating process. The drilling life is much longer than other factories. 鈼?We will make sand-blasting process after brazed drill bits. It will decrease the risk of defect drill bits. 鈼?We will grind the body and after special process, our surface will be more smooth and golssy. 鈼?We use dry anti-rust oil, it is better to prevent rust and the packing will not be dirty. 鈼?We will check SDS PLUS or SDS MAX shank through the mould and make sure 100% products鈥?shanks are standard. SDS-MAX Drill Bits Carbide Tip Size: 10mm-38mm (25/64"-1-1/2")SDS-MAX Drill Bits Total Length Size: 280mm-1200mm (11" ----- 48") Body Material: 40Cr Carbide Tip: YG8C Carbide Tip Type: One Head Tip, Cross Head Tip, Central Point Tip, Crown Tip Flute: different flutes available, if order qty is big, can be customized Parameters SDS-Max Shank Electric Drill Bits Details Remark: single carbide tip is available APPLICATIONS FAQ Q1: What is your delivery time? A1: For products in stock, delivery time within 7 working days. For items not in stock, according to the quantity the production time is 30-90 working days. Q2: Can we put customer brand? A2: Yes, if your quantity is large. We can put customers鈥?logo into products and package. Q3: How long will it take to execute my order? A3: This depends on the size and complexity of the order. If your item need to customize, the production time will lasting longer than normal type. Q4: How much will the shipping charges be? A4: This will depend on the weight, CBM of your shipment and method of shipping. When you inquire the shipping charges, please let us know your favorite method of shipping (by air or by sea), and your destination. Q5: Which shipping port we ship the goods from? A5: Our loading port is Ningbo, China Port, if you need any other ports please let us know in advance. Q6: How about payment term? A6: T/T OR L/C. You can see more our company information on www.dongyagroup.com Drill Bits website:http://www.dongyapowertools.com/drill-bits/