102MM guide star ring with height increasing block, two sets and one pair

S7925 102mm six point star guide ring
Thickness: 8mm, maximum diameter of guiding mirror: 95mm, minimum diameter of guiding mirror: 55mm
Weight: 135 * 2=270 grams

Number: B/S7931
Upper edge
Length: 48MM Width: 23MM Slot Width: 16MM Slot Depth: 1.5MM Bottom Edge
Length: 56MM Width: 30MM
Height of cushion block: 18MM Weight: 50g/block