Saver sub 、Cossover sub

Product Paramenters：

• Chucks & pull buck devices and pull head , diameter and other accessories are made of high performance alloy material ,  parts all use glow ion nitriding treatment , high wear resestance is three times the market on the commom parts of the service life

• Procedures and strict test ,ensuring precision connection of the drilling tools .

  
  

  Model Compatibility	Out public buckle length	Outer diameter	Screw thread
  D7x11A,D10x14, D10x15	5.83" (14.8 cm )	4.8cm	#200
  D6x6—D10x15 S3	8" (20.3 cm )	4.8cm	#200
  D16x20—D20x22	4" (10.2 cm )	5.4cm	#250
  D18x22, D20x22	6.5" (16.5 cm )	5.7cm	#400
  D16x20 Series II, D20x22 S3	10.14" (25.8 cm )	5.4cm	#250
  D20x22FX Series II	10.14" (25.8 cm )	5.7cm	#400
  D20x22 Series II, D20x22 S3, D23x30 S3	10.14" (25.8 cm )	5.7cm	#400
  D23x30 S3	10.14" (25.8 cm )	6.67cm	#600
  D24x40A (SN 001—382)	5.5" (14 cm )	6.67cm	#600
  D24x40A (SN 383 and above)	7" (17.8 cm )	6.67cm	#600
  D24x40 Series II	9.5" (24.1 cm )	6.67cm	#600
  D24x40 S3	10" (25.4 cm )	6.67cm	#600
  D36x50 Series II	7.92" (20.1 cm )	7cm	#650
  D36x50, D36x50 Series II	8.5" (21.6 cm )	7.9cm	#700
  D40x55 S3	8.92" (22.7 cm )	7cm	#650
  D40x55 S3	9.50" (24.1 cm )	7.9cm	#700
  D50x100A—for Drive Chuck 296355366	5.82" (14.8 cm )	8.255cm	#900
  D50x100A, D60x90, D60x90 S3, D80x100—for Drive Chucks 296255475, 296268832	7.02" (17.8 cm )	9.2cm	#800
  D60x90, D60x90 S3—for Drive Chucks 296357202, 296257222	8.7" (22 cm )	8.255cm	#900
  D100x120 Series II, D100x140, D100x140 S3—for Drive Chucks 296309516, 296309602	7.02" (17.8 cm )	11.1cm	#1000
  JT5,JT520C	10cm	4.7cm	DW1.1
  JT520F	10cm	4.4cm	DW1.21
  JT920,JT921	12cm	5cm	DW1.41
  JT920L	12cm	5cm	DW1.41
  JT922	12cm	5cm	DW1.3
  JT1220	14cm	6cm	DW1.47
  JT1720	14cm	6.3cm	DW1.69
  JT2020,JT20	16cm	6.6cm	DW1.94
  JT2720	16cm	7cm	DW1.94
  AT30	16cm	8.2cm	DS2.77
  JT2720M1,JT3020	18cm	7.6cm	DW2.11
  JT4020	18cm	8.2cm	DW2.4
  JT4020M1	18cm	8.9cm	DW2.59
  JT7020,JT8020,JT100	20cm	10.1cm	DW3.27