3/8" L x 1/8" OD
Harowe 11CT-300-D-1A/10 Synchro C.T. Resolver 11CT300D1A10
You will find the 1 inch x 2 inches x 1 inch dimensions make it a no-brainer for small jobs.
Harowe 11BRW-300-B1 Harosyn-RW Resolver 11BRW300B1 (Pack of 3)
The Honeywell INNCOM E528 model works reliably in both small and large buildings.
Harowe 11BRW-300-B1 Harosyn-RW Resolver 11BRW300B1
A nice touch from PRI is the way it aligns with your existing tools.