BOBBINS & SPOOLS Inches | Millimeters Bobbin Equipment Type Flange Diameter Traverse Barrel OD Bore Size(s) Drive Type 2.2 Bobbins Hacoba .980" 2.210" .490" .334" Right & left drives No. 1 Bobbin N E Butt/Wardwell 1.32" & 1.46" Smooth, 3" to 6"; Textured, 3.3" Smooth .625", Textured .590" 0.325" 6 tooth ratchet 38mm Steeger 1.50" 4.33" .645" .440" Drive Slots 42mm Steeger 1.65" 4.33" .645" .440" Drive Slots A Spool (1 oz.) Thread 1.687" 2.00" see notes .875" .310"   No.2 Bobbin N E Butt/Wardwell 1.81", Button Head 4" to 6" Smooth, .625 typical 0.330", 0.450" 6 & 8 tooth ratchet, 8 tab tooth No.2 Bobbin N E Butt/Wardwell 1.81", Flat Head 4" to 6" Smooth, .625 typical 0.330", 0.450" 6 & 8 tooth ratchet, 8 tab tooth No. 2 Fine Wire N E Butt/Wardwell 1.82", Wide Button Head Smooth, 2.5" & 2.75" Smooth, .675 typical 0.325" 6 & 8 tooth ratchet or 8 tab tooth No.2 Bobbin N E Butt/Wardwell 1.83", Double Head 4" to 6" Smooth, .625 typical 0.330", 0.450" 6 & 8 tooth ratchet, 8 tab tooth B Spool (2 oz.) Thread 2.125" 2.00" see notes .875" .312"   63 x 170 Ratera, Herzog, 2.50" 6.69" .83" .55" 7 pin slots 63 x 200 Ratera, Herzog, 2.50" 7.87" .83" .55" 7 pin slots CP-7.5 Ratera 154 2.58" 6.67" 1.08" .64" Slot - bottom flange CRB-01 Hacoba 2.59" 2.70" 1.34" 0.65"   CRB-02 Hacoba 2.59" 4.07" 1.34" 0.65"   CP-16 Wardwell 2.60" 2.84" 1.38" .660"   CP-24 Wardwell 2.60" 4.20" 1.38" .660"   2 BDX-HC N E Butt/Wardwell 2.625 6.0" to 8.0" in 1/2" increments Smooth, .687" typical .406", .441",.506' 8 tooth ratchet 10" Steeger Steeger 2.75" 9.562" Textured, .937" .688" Drive slot 2 BDX N E Butt/Wardwell 2.75" 6.0" to 8.0" in 1/2" increments Smooth, 1.062 typical .406", .441",.506' 8 tooth ratchet 2 BDX-EL N E Butt/Wardwell 2.75" 7.5" to 13.0" in 1/2" increments Smooth, .810" typical .385" or .510" 8 tooth ratchet CP-3X3 Spirka 3.09" 3.15" Smooth, .880" .400" Drive Slot #4-SDF N E Butt/Wardwell 3.375" 6.0" to 8.0" in 1/2" increments Smooth, 1.062 typical .406", .441",.506' 10 tooth ratchet 3-EL N E Butt/Wardwell 3.50" 7.5" to 13.0" in 1/2" increments Smooth, .810 typical .385" or .510" 10 tooth ratchet 13" Steeger Steeger 3.72" 11.50" Textured, 1.19" .89" Drive Slot 4 X 4 Spirka 3.812" 3.125" Smooth, 1.250" .390" or .625" Drive Slot #4 Braider N E Butt/Wardwell 4.00" 6.0" to 7.0" in 1/2" increments Smooth, 1.062 typical .406", .441",.506' 10 tooth ratchet Sashcord Bobbin N E Butt/Wardwell 4.00" 6.0" to 7.0" in 1/2" increments Smooth, 1.062 typical .406", .441",.506' 2 Hole Pin Drive #4-EL N E Butt/Wardwell 4.00" 9.0" to 16.0" in 1/2" increments Smooth, .810" typical .385" or .510" 10 tooth ratchet Jette Spool Herzog 4.00" 7.062" Smooth, 1.062" typical .531" Drive Slot C S Rug Braider N E Butt/Wardwell 4.60" 7.00" Smooth, 1.00" .500" 12 Ratchet teeth CP-224L (Bore or Slot) Herzog 4.76" 13.80" 1.40" .615" Bore or Slot Kokobun Rug Kokobun 5.22" 7.12" Smooth, 1.10" .620" 10 tooth ratchet Cop Holder 6RATT N E Butt/Wardwell No top flange Smooth with ribs   0.325 6 tooth ratchet Cop Holder 8RATT N E Butt/Wardwell No top flange Smooth with ribs   0.325 8 tooth ratchet Cop Holder 8TABT N E Butt/Wardwell No top flange Smooth with ribs   0.325 8 tooth tabs Cop Holder #2BDX N E Butt/Wardwell No top flange Smooth with ribs     8 tooth ratchet