For everything you need to complete your battery set.
To keep it understandable, BCS stands for Battery Connector Set and the number at the end is for how many batteries it is made to connect.
OPTIONS AND INCLUSIONS
BCS2 = 1x Red 300mm long 35mm2 cable with 8mm ring terminals either end
1x Black 300mm long 35mm2 cable with 8mm ring terminals either end
2x Lead Wingnuts (One positive one negative)
2x Brass Nuts
BCS3 = 2x Red 300mm long 35mm2 cable with 8mm ring terminals either end
2x Black 300mm long 35mm2 cable with 8mm ring terminals either end
2x Lead Wingnuts (One positive one negative)
4x Brass Nuts
BCS4 = 3x Red 300mm long 35mm2 cable with 8mm ring terminals either end
3x Black 300mm long 35mm2 cable with 8mm ring terminals either end
2x Lead Wingnuts (One positive one negative)
6x Brass Nuts