C-337 Size: 8-1/2" with 1" OD Features: -Extension springs.-Generally close wound helical with ends.-Formed to permit their use in applications requiring resistance to pulling force. Dimensions: -8.5 x 0.44" x 0.44" Dimensions: 8.5 H x 0.44" W x 0.44" D (Wire Diameter: 0.05" / Max. deflection: 9.3 / Max. safe load: 8.47).-8.5 x 0.56" x 0.56" Dimensions: 8.5 H x 0.56" W x 0.56" D (Wire Diameter: 0.05" / Max. deflection: 12.4 / Max. safe load: 9.55).-8.5 x 0.63" x 0.63" Dimensions: 8.5 H x 0.63" W x 0.63" D (Wire Diameter: 0.06" / Max. deflection: 10.7 / Max. safe load: 12.9).-8.5 x 0.63" x 0.63" Dimensions: 8.5 H x 0.63" W x 0.63" D (Wire Diameter: 0.08" / Max. deflection: 5.2 / Max. safe load: 25.6).-8.5 x 0.88" x 0.88" Dimensions: 8.5 H x 0.88" W x 0.88" D (Wire Diameter: 0.06" / Max. deflection: 23.9 / Max. safe load: 9.37).-8.75 x 0.88" x 0.88" Dimensions: 8.75 H x 0.88" W x 0.88" D (Wire Diameter: 0.11" / Max. deflection: 5.56 / Max. safe load: 40.1).-8.75 x 1" x 1" Dimensions: 8.75 H x 1" W x 1" D (Wire Diameter: 0.12" / Max. deflection: 5.38 / Max. safe load: 51).-10.25 x 0.44" x 0.44" Dimensions: 10.25 H x 0.44" W x 0.44" D (Wire Diameter: 0.04" / Max. deflection: 17.5 / Max. safe load: 5.6).-10.25" x 1.25" x 1.25" Dimensions: 10.25" H x 1.25" W x 1.25" D (Wire Diameter: 0.15" / Max. deflection: 6.18 / Max. safe load: 73.7).-12 x 1" x 1" Dimensions: 12 H x 1" W x 1" D (Wire Diameter: 0.11" / Max. deflection: 11.7 / Max. safe load: 35.4).