Protapers of same tip diameter are

PROTAPER INSTRUMERNTS A unique feature of Pro Taper instructions is each one has changing percentage tapers over the length of the cutting blades. Pro taper instruments have convex, triangular cross – sections, a changing helical angle and push over their cutting blades and a non-cutting, modified guiding tip. The Pro Taper system is comprised of three Shaping and three Finishing instruments.