You are looking at a pack of 4 Audio Origami PTA Plastic Spacers (shims) for VTA adjustment of Rega RB200/RB250/RB300 tonearms.
This listing is for the Silver finish. Also available in Black finish (listed separately).
The 4 spacers (shims) you will receive are the following sizes:
1 x 4mm
1 x 3mm
1 x 2mm
1 x 1mm
These spacers/shims can be used separately or can be combined to obtain the perfect V.T.A. for your tonearm/cartridge combination.