Clamps with 40-ish mm inner diameter

47mm clamp to M65x1 male thread adapter

$34.00

44mm clamp to M52x1 male thread adapter for helicoids

$29.00

42.5mm clamp to M52x1 male thread adapter for helicoids

$34.00

40mm clamp to M52x1 male thread adapter for focusing helicoids

$24.95

40mm clamp to M65x1 male thread adapter for helicoids

$29.00

42.5mm clamp to M42x1 male thread adapter for helicoids

$29.95

43mm clamp to M49x0.75 male thread adapter (for Kowa 16-D lenses)

43mm clamp to M52x0.75 male thread adapter (for Kowa 16-D lenses)

$34.00

43mm clamp to M55x0.75 male thread adapter (for Kowa 16-D lenses)

$34.00

43mm clamp to M58x0.75 male thread adapter (for Kowa 16-D lenses)

$34.00

40mm clamp to M52x0.75 female thread adapter

$24.95

42mm clamp to M52x1 male thread adapter for helicoids

$29.00

4x mm clamps