The primary purpose of this adapter is to provide better comfort for cyclists who suffer from metatarsal pain or hot spots. The adapter does so in two ways: 1) The pressure point is moved 20mm away from the ball of the foot, and 2) A much larger support area is provided, distributing the cleat pressure over a 4x more extensive area.

The SPIN2 adapter DOES NOT FIT all shoes and all pedals:
A) shoes that have a fully recessed cleat groove. See the photos below. The adapter only fits shoe soles that have no protruding edges behind the cleat.

B) Shoes with only two threads available for the M5 bolts. Such baseplates might rotate. See the photos below.

C) Specialized shoes with 13 mm between the M5 thread rows in the inlay brackets.
ONLY Compatible with Shimano SPD.
NOT compatible with Crank Brothers and BeBop 2-bolt system.
NOT compatible with Time MTB cleats/pedals and Echelon Connect pedals.
IF you have Specialized shoes, verify that they have a 10mm gap between the two sets of M5 threads in the inlay brackets.
Weight: 2 x 39g per set, incl. screws and largest size shims.
Adds only 1.5 mm to the stack height.

Contents
2x adapters made of AISI430 stainless steel.
12x M5 8mm nylon-tipped TORX screws strength class 10.9.
4x Insert nuts made of AISI303 stainless steel.
Three pairs of shoe-curvature shims.