NSK Dental Global on Instagram: "Our contra-angles are not only about durability and comfort. See below for the attraction and key features of NSK’s contra-angle handpieces. ・Anti Heat System Our Anti Heat System dramatically reduces heat generation to prevent burning. ・Clean Head System The Clean Head System has an anti-suck back mechanism that stops blood and foreign matter from entering the head from the oral cavity. ・DURAGRIP The unique non-slip, non-scratch surface treatment improves durabi