Guts & Glory MSVCF17

MSV Co.-Focus 17L/1.18 String

Line: MSV Co.-Focus

$8.90

Reference price as of June 2026 Not a live offer

Offering a high level of control and a softer feel than traditional polyester strings, Co.-Focus makes a great choice for big hitting players looking for control and durability. We found excellent access to spin when testing this string. Comfort was also impressive for a co-poly and we found impressive performance at a variety of tensions.

String specs

Gauge	17L/1.18mm
Length	40ft/12m
Composition	Co-polyester Monofilament
Color	Dark Blue, Red, White

Where to buy

Tennis Warehouse

What players say

Liked 2 sources

MSV Co.-Focus 17L/1.18 has a small but consistently positive set of Tennis Warehouse customer reviews spanning over a decade. Reviewers, many using it as a cross with natural gut or synthetic gut mains, describe it as soft and comfortable for a co-poly, with good control, ball pocketing, and tension retention, at a low price.

Best for

Cross string in a hybrid with natural or synthetic gut mains
Players wanting a softer, arm-friendly co-poly
Control-minded players who still want some spin
Budget-conscious stringers wanting a durable poly

Pros

Described repeatedly as soft and comfortable for a co-poly, several reviewers call it arm-friendly
Good control and ball pocketing noted across many reviews over different setups
Holds tension well and several reviewers report it does not notch the mains much in hybrids
Low price with good value and longevity cited by multiple reviewers

Cons

One recent reviewer said tension maintenance could be better
A couple of reviewers rate its spin as moderate rather than top-tier compared to shaped polys
Review volume is small and comes mainly from one retailer's customer comments rather than independent playtests or video reviews