Tension Rods Reference Guide of Gibraltar

Key Rod?- Tension rod with drum key style head. Generally used on snare drums, tom toms, and at the bottom of a bass drum.
T-Rod?- Tension rod with T-handle. Used on bass drums.
Diameters:
- 7/32" - Fits tom and snares for Pearl, CB, Mapex, Tama, Ludwig, Gretsch, Premier, Pacific, and most other manufacturers with the exception of Sonor. Fits DW drums prior to 1996 production.
- 6 mm - Fits bass drums for Pearl, CB, Mapex, Tama, Ludwig, Gretsch, Yamaha, and other generic Taiwan-made drums. Other manufacturers generally use 7/32" bass drum key rods.
Lengths:
- SC-4J - 1 3/8" (35 mm), fits many piccolo snare drums and small tom toms.
- SC-4C - 1 5/8" (41 mm), fits many snare drums, small and medium toms, and some floor toms.
- SC-4B - 2" (51 mm), fits toms and floor toms with a lot of space between hoop and tension casing.
- SC-4E - 2 3/8" (58mm), fits some floor toms and bass drums.

Features:
Fits some floor toms and bass drums. Packaged in quantities of 6 per pack (with washers).