18 Soft Plastic White Wobble Wedges - Leveling Shims For Tables/Chairs Material:Plastic 1/2" high and about 1/8"

1/2" high and about 1/8" thick

There should be a metal plate or washer between the bolt head and the fiberglass rocker spring plate

Stem bumpers can be flat or coved (curved) to fit the shape of the tubular metal of the patio chair base

Plastic housing protects felt for extensive use

Hard Wobble Wedges are tough and durable plastic shims supporting over 2000 lbs

18 Soft Plastic White Wobble Wedges - Leveling Shims For Tables/Chairs Material:Plastic 1/2" high and about 1/8"Soft Wobble Wedges for a better grip on smooth floors. Soft Wobble Wedges are super flexible non marring plastic wedge shims that easily conform to the shape of whatever they support. Their rubber like texture creates a firm grip on slick floors and also reduces rattling sounds by absorbing vibration. Wobble Wedges are flexible and can be easily trimmed to a perfect fit with scissors or utility knife. Restaurants schools and the construction industry