Our high quality 400 mm drill bit is perfect for use with electric core drills for drilling on granite, hard stone, concrete, reinforced concrete, and other hard surfaces. Its durable construction will ensure smooth operation of the drills. We also provide bits of other sizes to meet different drilling needs. Segement Height: 7 mm. Threaded connection: 1 1/4. Brand Unbranded EAN Does not apply Model Dry and wet Item Condition New MPN Does Not Apply. Size: 26mm X 400/32 x 400/50 mm X 400/63 x 400/71 x 400/82 mm X 400/102 mm X 400/110 mm X 400/120 mm X 400/132 mm X 400/150 mm X 400/180 x 400 mm. However, unfortunately there may be occasions when you will need to return items to us. Once we know you have not received your item we will investigate the matter fully both internally and with our carriers. Unfortunately we cannot investigate non receipt deliveries after this time has elapsed. Investigations into lost parcels can take up to 14 days. UK 3 Pin plug and 240v Supplies where applicable. If the items are visibly damaged on receipt, please take some photos or a video to us show that? We will try our best to help you solve this problem. Have a good day! You must take reasonable care to ensure that we receive the goods and the goods are not damaged in transit.