Extender Inflatable 1 2 Leg 6 for #7450AD or 7450AS Lamps Magnifying Examination 75 26 Base Length: Autoclavable Up to 325 75 26 Base Length: 39 40 Base Depth: 18 Easy to read accurate instrument offers versatility for measuring large and small joints * Features includes: 4X magnifying lens to read the dual 180 degree high resolution scale and 2 stainless steel arms extending 9 to 26 * Constructed of chromium plated brass * 360 degree arm rotation (both directions) * resistance swivel * Compact lightweight and portable * Smooth precision glide * Total extended length: 22 1 4 Shipping Carton Size: 9 L x 7 W x 5 H * This extender will fit #7450AD (you would need 2) or #7450AS