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Patent Pending 

SIMple™ Fit Gears are protected under patent laws worldwide

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MARK HOLTZE | SIMMOD PRO MEMBER | @mholtze

ATTENTION:  If the measurement of your lens falls in between two sizes, please select the next size up.  For example, if your lens measures 65.5 (size S), please select size 66-69 gear (Size M).  Before you invest in parts to modify your lens, we strongly encourage you to invest in the tools needed for proper measurement.  A digital calliper sells for $10 on Amazon.com.  Please consider purchasing one. 

Our SIMple Fit Follow Focus Gears are machined from solid aluminum, consisting of a 32-pitch gear with a 0.8 Module.  This is the industry standard.

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