2419T4684D1 Pin Bucket to dipper arm Fits KOBELCO SK220, SK250, SK270, III IVOne New Aftermarket Replacement Bucket to Dipper Arm Pin for Kobelco SK Series Excavators This heavy duty bucket linkage pin connects the bucket to the dipper arm (or link to dipper) on Kobelco SK220, SK250, and SK270 excavators. It is a critical front linkage component in the excavator's boom arm bucket assembly, subject to constant load and impact during digging operations. Measured at 90mm OD x 23 1 2" (approximately 500mm) in length, this pin is