Four rivets protector, more robust than tapes with either two or three Hook protector, rubberised bumper to protect the hook end if the tape is dropped Tape can be extended unsupported up to 2.2 metres Neodymium magnet Shock absorbing, Damper reduces shock impact on the hook when retracting the tape Makita is the leading manufacturer of professional power tools on the market. The B-57168 is double sided, the measure scale in both Metric and imperial measurements on the back and front of the tape. Matte finish to reduce light reflection making the tape easier to read and with silica coat for durability.