SI-1107B Maximum Torque:30Nm Super small ratchet wrench with 1/4"sq. anvil Smaller than SI-1200B & SI-1205B SI-1200B Maximum Torque:35Nm Light and small ratchet wrench with 1/4"sq. anvil This model is the “Mini Ratchet Wrench" standard in the air tools industry SI-1207 Maximum Torque:38Nm Same body size as SI-1200B but with a plastic body cover that protects your hand from the cold 360゜air inlet swivel SI-1251 Maximum Torque:45Nm Japan and foreign patent(s) pending as the "Slide Switch" for the reverse function Plastic covered small size body 1/4"sq. anvil SI-1108B Maximum Torque:30Nm Super small ratchet wrench with 3/8"sq. anvil Smaller than SI-1200B & SI-1205B SI-1205B Maximum Torque:40Nm Light and small ratchet wrench with 3/8"sq. anvil This model is the “Mini Ratchet Wrench" standard in the air tools industry SI-1208 Maximum Torque:40Nm Same body size as SI-1205B but with a plastic body cover that protects your hand from the cold Also helps to absorb vibrations for reduced operator fatigue Built-in air Regulator for easy adjustment of torque SI-1252 Maximum Torque:47Nm Japan and foreign patent(s) pending as the "Slide Switch" for the reverse function Plastic covered small size body 3/8"sq. anvil SI-1261 Maximum Torque:110Nm Japan and foreign patent(s) pending as the "Slide Switch" for the reverse function Plastic covered regular size body The lightest 960g in this class Lightweight and high strength super duralumin is used for housing SI-1261S Maximum Torque:110Nm Japan and foreign patent(s) pending as the "Slide Switch" for the reverse function Plastic covered regular size body The lightest 960g in this class Lightweight and high strength super duralumin is used for housing