For Seiko Bezel 

1 Clicker Spring and 2 x Ball Bearings

Custom made to match the original.

These springs are manufactured to the correct length ready to fit, 

the ball is made from GCR15 Alloy Bearing Steel. 

Spare ball incase of drops / loss due to the size.

Put a small dot or blob of silicone grease or similar on the spring tip,

to hold the ball while the Bezel is fitted.

Certain cases had the original ball crimped in - if the new ball wont go 

through the hole it is quite happy sat on the spring 

with grease holding it and pressed against the ridges under the bezel ring. 

Fits case backs listed below and others, also other brands with same design. 

Seiko Part Number 8135-0180 

SEIKO CASE BACK NUMBERS