{"product_id":"knobbed-cylinder-block","title":"Knobbed Cylinder Block","description":"\u003cp\u003eA wooden knobbed cylinder set, the classic Montessori sensorial material for grading by size. This listing offers two configurations: Set 1 is loose knobbed cylinders only, with no holder blocks. Set 2 is four wooden holder blocks, each fitted with a row of graduated cylinder sockets and its own matching knobbed cylinders — the traditional four-block Montessori set.\u003c\/p\u003e\u003cp\u003eWith Set 2's holder blocks, Montessori families work one skill at a time: lifting each knobbed cylinder by its three-finger grip and returning it to the one socket it fits, working out size, length and thickness by feel. Set 1's loose cylinders support the same by-hand comparison without the sockets.\u003c\/p\u003e\u003cp\u003eMaterials: wood, painted finish. Size (Set 2 holder block): 17 x 17 x 6 cm (about 6.7 x 6.7 x 2.4 in) each; Set 1 dimensions are not listed separately by the supplier.\u003c\/p\u003e\u003cp\u003eAge: 3 years and up, adult supervision required. Warning: choking hazard, small parts. Not for children under 3 years (16 CFR 1500.19).\u003c\/p\u003e\u003cp\u003eCare: wipe clean with a dry cloth.\u003c\/p\u003e\u003cp\u003eDelivery: 5 to 13 business days after your order ships.\u003c\/p\u003e","brand":"Lindenkin","offers":[{"title":"Set 1","offer_id":49637306237166,"sku":"DS-L26-1","price":50.99,"currency_code":"USD","in_stock":false},{"title":"Set 2","offer_id":49637306269934,"sku":"DS-L26-2","price":64.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0828\/4792\/4462\/files\/L26_var2.png?v=1790242137","url":"https:\/\/lindenkin.com\/products\/knobbed-cylinder-block","provider":"Lindenkin","version":"1.0","type":"link"}