Features: WHAT YOU GETTotal of 20pcs terminals with 20pcs protective sleeves or 50pcs terminals with 50pcs protective sleeves. Sufficient quantity guarantees your daily use for different purposes. QUALITY MATERIALThese insulated crimp connectors are made of copper material, durable and practical, long time use, easy to crimp, and hold your wire tight. Insulating sleeve, matching crimp terminal use, insulated and flame retardant, safe and reliable. WIDELY USEThe male and female connectors are great for the machine, electric power, home appliance, computer or other automatic equipment. SIMPLE TO USEAn easy step connection of wires, insulated and sealed. The butt connectors crimp can be ideally used in marine and automobile applications. VARIETY OF CHOICESFully-insulated quick-disconnect terminals are available in a variety of options. The crimp connectors are also suitable for electricians, technicians, home users, hobbyists, and beginners. Specification: Material: copper Color: silver + red Type: A (6.3insert spring + protective sleeve) B (6.3insert sheet + protective sleeve) C (2.8insert spring + protective sleeve) D (2.8insert sheet + protective sleeve) E (4.8insert spring + protective sleeve) F (4.8insert sheet+ protective sleeve) Type Terminal (L x W A 17 x 7.2mm/0.67 x 0.28inch B 19.8 x 6mm/0.78 x 0.24inch C 15 x 3.8mm/0.59 x 0.15inch D 16.5 x 2.8mm/0.65 x 0.11inch E 15 x 5.5mm/0.59 x 0.22inch F 17 x 4.8mm/0.67 x 0.19inch Package Included: (type A/B/E/F) 20 Pcs x Terminals 20 Pcs x Protective Sleeves or (type C/D) 50 Pcs x Terminals 50 Pcs x Protective Sleeves Note: 1. Due to the light and screen difference, the item's color may be slightly different from the pictures. 2. Please allow 1-2 cm differences due to manual measurement.