L x W = 2.6 x 2.6 inches, pack of 4.
Replace part number: A226001410, 130310-54130 13031054130.
Compatible with ECHO GT200 GT200i GT200R GT201i GT201R GT225 SRM210 SRM210i SRM210SB SRM210U SRM211i trimmer.
Replacement for ECHO HC150 HC150i HC151 HC151i hedge trimmer ECHO PE-200 PE-201 power edger, PPF-210 PPF-211 pole pruner.
Easy to install.