Features: brand new and high quality Lower noise, strong torque, stable property and high accuracy. 3D Printer motors 42-40 stepper motor 2 Phase 1A 1.85% degree step angle stepping motor for 3D printer extruder. Compatiable with for Prusa i3 MK3S/MK3S+, BLV MGN Cube and Voron 2.4/Switchwire 3D printers. Had better install it to BMG style extruder, which has >1:3 ratio. Motor Size is approx 42 X 42mm (1.7 X1.7In), come with 2M/6.56ft extension cable. Specifications: Step angle:1.85% . Number of phase:2 Phase voltage:3.5 VDC Phase current:1.0Amp. Phase inductance:4.520% Static moment:0.13 N.n Insulation class:Class B Insulation resistance 100MO min. (500V for DC) Ambient temperature:-20+50 Ambient hum:15% to 95% Motor weight:Appror 0. 1Kg Use vol tage :VDC: 12-36V Recomnended drive:0K2D4020A Cable:40cm/1.31ft Extension Cable:200cm/6.56ft Compatiable with: for Prusa i3 MK3S/MK3S+, BLV MGN Cube and Voron 2.4/Switchwire 3d printer. Note: Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurment. Package includes: 1Set For Voron 2.4 Extruder Motor