Slick 6 yo-yo replacement strings, also known as 50/50 Blended Cotton/Polyester. Strings are pre-tied with finger loop at one end, each approximately 42 inches in length.
Your individual preferences may vary, but as a general guideline Slick 6 yoyo strings are excellent for ball-bearing yoyos. The blend of 50% Cotton and 50% Polyester gives good performance and durability for fast spinning yoyos.
The string "Type" refers to the number of strands that compose the yoyo string: All Slick 6 are a Type 6