Drum Pedals, Parts Pearl Bass Drum Pedal Spring SP31F

Bass Drum Pedal Spring

Backstage Music’s Pearl bass pedal spring guide:

SP-31F: P830
SP-64F: P-930, Eliminators
SG-014: P-932
SP-64NF: P3000C, P3002C, P2052C,P2052B, P3000D, P3002D, P2050C, _2050B, Demonators

The SP-31F is 3.5cm long not counting the hooks, and 5.6cm long with the hooks.
The SP-64F is 4cm long not counting the hooks, and 6cm long with the hooks. The SP-64F hooks run in the same direction.(- -)
The SP-64NF is 4cm long not counting the hooks, and 6cm long with the hooks. The SP-64NF hooks run 90 degrees to each other (- |)