3.5" bore, 2.5" rod, 14.56" stroke. Used on 200 series Bateman grapples:1.25 cu. yd. (grapple B4T2-125)1.5 cu. yd. (grapple B4T2-150)2.0 cu. yd. (grapple B4T2-200)3.0 cu. yd. (grapple B4T2-300)0.76 cu. yd. (grapple B5T2-100)1.0 cu. yd. (grapple B5T2-125)1.2 cu. yd. (grapple B5T2-150)1.5 cu. yd. (grapple B5T2-200)2.29 cu. yd. (grapple B5T2-300)Used with replacement seal kit BMF-BN1514SK and replacement cylinder guard part nuimber LD6074.