The Bower 72-67mm Step-Down Adapter Ring easily screws onto the front of any 72mm Lens and allows you to convert to the 67mm threads of accessory items (such as filters hoods flashes and lens converters)....

The Bower 72-77mm Step-Up Adapter Ring easily screws onto the front of any 72mm Lens and allows you to convert to the 77mm threads of accessory items (such as filters hoods flashes and lens converters)....

The Bower 72-82mm Step-Up Adapter Ring easily screws onto the front of any 72mm Lens and allows you to convert to the 82mm threads of accessory items (such as filters hoods flashes and lens converters)....

Protect perhaps the most important and expensive part of your camera outfit with the durable Bower 72mm Pro Series II Snap-on Lens Cap....

Protect perhaps the most important and expensive part of your camera outfit with the durable Bower 72mm Pro Series II Snap-on Lens Cap....

The Bower 77-62mm Step-Down Adapter Ring easily screws onto the front of any 77mm Lens and allows you to convert to the 62mm threads of accessory items (such as filters hoods flashes and lens converters)....

The Bower 77-67mm Step-Down Adapter Ring easily screws onto the front of any 77mm Lens and allows you to convert to the 67mm threads of accessory items (such as filters hoods flashes and lens converters)....

The Bower 77-72mm Step-Down Adapter Ring easily screws onto the front of any 77mm Lens and allows you to convert to the 72mm threads of accessory items (such as filters hoods flashes and lens converters)....

The Bower 77-82mm Step-Up Adapter Ring easily screws onto the front of any 77mm Lens and allows you to convert to the 82mm threads of accessory items (such as filters hoods flashes and lens converters)....