Guts & Glory WCS120

Weiss CANNON Silverstring 17/1.20 String

Line: Weiss CANNON Silverstring

$10.90

Reference price as of June 2026 Not a live offer

One of the most technologically advanced co-polymer strings currently in production. Players using the Weiss Cannon Silverstring will realize controllable power, excellent spin potential and long-lasting performance.

String specs

Gauge	17/1.20mm
Length	40ft/12m
Composition	Polyester Monofilament
Color	Silver

Where to buy

Tennis Warehouse

What players say

Liked 2 sources

Long-running Tennis Warehouse reviews (2007-2025) consistently describe this as a soft, arm-friendly polyester with unusually good tension maintenance. Most players report solid control and spin at full-bed tensions in the high 40s to mid 50s, though a minority find it stiff out of the packet, unremarkable, or prone to extra power that makes depth control harder.

Best for

Players wanting an arm-friendly poly
Full poly setups needing tension stability
Baseliners who want control with some pop
Players moving off natural gut or synthetic gut

Pros

Reviewers repeatedly call it soft and comfortable for a polyester, including several who switched to it for arm issues
Tension maintenance is the most frequently praised trait, with multiple players saying it holds playability for weeks to months
Most reviewers report good control and spin at moderate-to-full tension
Several long-term users (some citing a decade of play) report no arm problems

Cons

A few reviewers found it stiff or uncomfortable in the first session before it breaks in
Some call it unremarkable, saying other co-polys offer better performance or value at a similar price
A couple of reviewers reported trouble keeping the ball in, suggesting more power than control for their swing
Almost all available feedback is anonymous retailer reviews rather than independent lab tests or video reviews