19mm diameter x 15mm high

Zenoah BC4500WE & Husky 143R (mach II)

Mitsubishi TL26, 33, 43 & 52

fits Kawasaki, Stihl & others

Suits Stihl 017, 018, 023, 025, 026, MS170 & 180
O.E:9638 003 1581

Suits Husky
O/E: 503 52 13 01

Suits Stihl 038 Magnum, MS380 & MS381
O.E:

HK series, fits Mitsubishi, Stihl & more O/E:0018004

Suits Husky
O/E: 501 62 66 02

Suits "Old Style" Stihl
O/E: 0000 350 0510

Suits "New Style" Stihl
O/E: 0000 350 0526

Suits many Husky
O/E:501 43 14 01