Introducing the MT618 Mechanical Weld-On Thumb, a reliable and durable solution for all your material handling needs. This 6" wide by 18" long thumb is ideal for machines under 3,900lbs and weighs only 29lbs. Constructed with ½" thick AR400 steel tines assembled in a ladder frame construction and reinforced with gussets, this thumb is built to withstand the test of time. The A-Frame link design further enhances the thumb by increasing torsional rigidity, ensuring that it can handle the toughest of tasks with ease. Additionally, the MT618's main pin is greaseable to ensure smooth operation and minimize wear.
The MT618 features an unparalleled design that sets it apart from the competition. With three adjustable positions at 90, 105, and 120 degrees, you can customize your thumb for the perfect fit and optimal functionality. The 120-degree position offers greater flexibility and reach compared to other brands. When not in use, this compact thumb quickly stows away, taking up only 20" of vertical room on your excavator stick and extending just 4" off the stick, ensuring it won't get in your way when digging. With no loose parts when stowed, you can rest assured that your equipment is secure and ready for use whenever you need it.
Maximize Your Investment
Invest in the Gentec MT618 to maximize the capabilities of your small excavators under 3,900lbs. Its adjustable design with three positions and convenient stowing benefits make this thumb perfect for homeowners, landscapers, and smaller contractors looking to get the most out of their equipment. With 35 years of experience and a strong commitment to our company values, Gentec has become a trusted choice for more than 50,000 satisfied clients. As a family-owned business, we take pride in our products and prioritize your satisfaction. Choose the MT618 Mechanical Weld-On Thumb for a lasting investment that will make a difference in your projects for years to come.
6" wide, 18" long,
Ideal for machines under 3,900lbs
½" thick AR400 steel tines
Three positions: 90, 105, and 120 degrees
Compact design, taking up only 20" of vertical room and extending 4" off the stick when stowed
No loose parts when stowed
Perfect for homeowners, landscapers, and smaller contractors
Greaseable main pin
Replacement parts readily available
1 year waranty
** PLEASE CHECK YOUR MEASUREMENTS BEFORE ORDERING. (LOOK UNDER "BIG DAVE" TAB FOR INSTRUCTIONS) CALL WITH ANY QUESTIONS OR IF YOU NEED HELP THE THUMBS CAN BE TRICKY TO ORDER CORRECT.
⚠ Pro Tip!If your excavator is equipped with a Pin-Grabber quick coupler, choose a longer thumb to ensure a suitable fit with your bucket.
Main Pin Diameter
Max. Extension Angle
Min. Operating Weight
Max. Operating Weight
Excavator Weight Class
1,500lbs to 3,900lbs
9NX-2, 7J, 7GX
17G, 17D, 17C
Thumbs usually ship out within (3) days
Please follow these instructions when measuring. You want your "stick to tip" measurement to be as close to the thumb tine length as possible. GENTEC's mounting plates are very narrow so typically there is no problems with the mounting plate (exception is the very smallest class of mini excavator)
Please follow these instructions when installing your thumb.
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