Home / Springs and Accessories / Tulip cutter 10/30 with inner coupling square 8 for 10 mm spring diam. 30 mmTulip cutter 10/30 with inner coupling square 8 for 10 mm spring diam. 30 mm Request a Quote Home / Springs and Accessories / Tulip cutter 10/30 with inner coupling square 8 for 10 mm spring diam. 30 mmTulip cutter 10/30 with inner coupling square 8 for 10 mm spring diam. 30 mm Request a Quote Tulip cutter 10/30 with inner coupling square 8 for 10 mm spring diam. 30 mm. The Tulip Cutter causes less damage, never gets stuck and removes debris more evenly, safely and cleanly than smilar tools, such as a chain head. Ideal for removing hardened grease, lime and urine deposits and rust in pipes.