Home / Springs and Accessories / TulipCutter 16/40 with inner coupling Rioned sq. 10 for 13/16 mm springs diam. 40 mmTulipCutter 16/40 with inner coupling Rioned sq. 10 for 13/16 mm springs diam. 40 mm Request a Quote Home / Springs and Accessories / TulipCutter 16/40 with inner coupling Rioned sq. 10 for 13/16 mm springs diam. 40 mmTulipCutter 16/40 with inner coupling Rioned sq. 10 for 13/16 mm springs diam. 40 mm Request a Quote TulipCutter 16/40 with inner coupling Rioned sq. 10 for 13/16 mm springs diam. 40 mm. The Tulip Cutter causes less damage, never gets stuck and removes debris more evenly, safely and cleanly than similar tools, such as a chain head. Ideal for removing hardened grease, lime and urine deposits and rust in pipes.