Easy to use, just put the crimps on the tool and crimp them, make crimping the insulation all the way to the wire Range of use Compatible with for and connectors with pins and plugs, such as 3d printer boards, etc. Includes storage box 560 pcs. JST connector kit, All kits are in a transparent box for storage and Tin plating, internal pure copper to increase conductivity, surface coating antioxidant, increase life. Male / female pin - full ;All kits are in a transparent box for storage and transport Colour:White Material:ABS + metal Package Contents: 20Pcs*JST 2.54mm -2 housing 20Pcs*JST 2.54mm -3 housing 20Pcs*JST 2.54mm -4 housing 20Pcs*JST 2.54mm -5 housing 20Pcs*JST 2.54mm -XH-Athrough-hole type shrouded header 20Pcs*JST 2.54mm B3B-XH-Athrough-hole type shrouded header 20Pcs*JST 2.54mm B4B-XH-Athrough-hole type shrouded header 20Pcs*JST 2.54mm B5B-XH-Athrough-hole type shrouded header 200Pcs*(2.5mm)*JST-XH Female Pin Connector 200Pcs*(2.5mm)*JST-XH Male Pin Connector Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.