Attachment answers
The questions we get before the order.
Almost nobody calls us to buy a bucket. They call to find out which bucket. These pages are our answers to the 14 questions that come up most: weight classes, pin diameters, coupler patterns, hammer sizing. They are written out properly, with the numbers from our own catalog rather than a generic chart.
If your question is not here, the fastest route is still Machine Match: tell it your make and model and it tells you what fits.
Sizing & fitment
Weight class, pin diameter, stick width: the three numbers that decide everything else.
What size bucket do I need for my excavator?Width follows the job; the machine's weight class sets the ceiling.What does the tonnage class on an attachment mean?It is an engineering window, not a marketing label.How do I know what pin size my excavator uses?Weight class narrows it to one or two; the tape measure settles it.How do I measure my excavator's pin diameter and stick width?Four measurements, one photo, no guesswork.
Pins & couplers
Pin-on, wedge lock, X-Change, universal quick-attach: what mates to what, and what does not.
Do I need a quick coupler?If you change attachments more than twice a week, yes.Will a Bobcat X-Change attachment fit a John Deere machine?No - different coupler geometry. Here are the three ways around it.Can I put a skid steer attachment on an excavator?Only with an adapter - and the geometry is against you.
Buckets
Digging, trenching, ditching, severe duty. Same machine, four very different tools.
What is the difference between a digging bucket and a trenching bucket?Volume versus precision - and the cost is in the restoration.What is a ditching (grading) bucket used for?Toothless, wide, shallow - the finishing tool.What is a severe-duty bucket and when do I need one?More steel where it wears - and more empty weight to carry.
Hammers & breakers
Matching impact energy and hydraulic flow to a carrier without beating the machine to death.
Thumbs & grapples
Grabbing, sorting and clearing: mechanical, hydraulic and rotating options.
Buying & freight
What attachments actually cost, and what shows up on the truck.
Not on the list
Send us four numbers and a photo.
Pin diameter, stick width, pin-to-pin centre distance and your machine’s operating weight will settle almost any fitment question in one message. If you are not sure how to take them, we wrote that up too.
All answers written and last reviewed August 2026 by the Quarrymark Attachments sales engineering desk.
