Micro series triple pulley with ring nut for ropes up to 6 mm in diameter, 19 mm sheave, stainless steel ball bearing, low weight 41 grams. Micro XS block ball bearing 6 mm - 3 sheaves, bow, becket smooth - running ball bearing, bearing body and balls made of stainless steel wobble riveting avoids sharp burrs at the rivet head cheek parts made of stainless steel and sheaves 19 x 8,3 mm of high quality UV - resistant plastic very low weight and extremely small and lightweight blocks of compact shape Many versions and fields of application but especially suitable for kicking strap, jigger or trimming lines excellent price/performance ratio